Re: Repository of Org files with important dates?

[Eric S Fraga <e.fraga@ucl.ac.uk>]

If you want solar based information (equinox, solstice, etc.), which is
not quite what you mentioned, I used this script to generate org file
headings:

#+begin_src shell :results output raw
  tmpfile=$(mktemp /tmp/date.XXXXXX)
  for year in $(seq 2018 2068)
  do
      links http://aa.usno.navy.mil/seasons?year=${year} -dump | \
          grep -E 'helion|quinox|olstice' > ${tmpfile}
      while read -r line
      do
          item=$(echo $line | awk '{print $1}')
          date="$(echo $line | awk '{print $5 " " $4 " " $3}') ${year}"
          isodate=$(date --date="${date}" +"%Y-%m-%d %H:%M")
          echo "** <${isodate}> $item"
      done < ${tmpfile}
  done
  rm ${tmpfile}
#+end_src

This script assumes "links" is available but is otherwise sort of
portable for any bash like shell.

But I haven't used it since 2018 when I generated the data for the next
50 years so cannot guarantee the website is still there! :-)

-- 
: Eric S Fraga via Emacs 28.0.50, Org release_9.4.4-254-g37749c